Release for fire-extinguishing apparatus.



No. 848,847 PATENTED FEB. 12, 1907.

H. SANDVOSS. RELEASE FOR. FIRE EXTING'UISHING APPARATUS:

AYPLIOATION FILED IULYIB. 1906.

"diaphragm la.

HERilll ZQN SANDVOSS, OF NEUSS, GERMANY.

RELEASE FOR FlRE EXTlNGUlSHl NG AhPARATUS.

Specification of Letters Patent.

Patented. Feb. 12, 1907.

Application filed July 13,1906. Serial No. 326,000.

To all whom it may concern:

Be it known that .l, Hnmmxx SANDVOSS, Neuss-on-the-Rhine, Germany, a subject of the German Empire, have invented a new and useful Releasing Device for Fire-Extinguishing Apparatus, of which the following is a full and complete specification.

This invention relates to an automatic re lease for lire-extinguishing apparatus, which diflers from others of its kind in its simplicity and absolute reliability in case of fire;

The accompanying drawing represents a longitudinal section of my improved releasing device.

A piston a plays in a cylinderi), tilled with mercury or other suitable material. In or der to insure the secure packing of the neck throughwhich this piston passes and in order not to hamper the pistons movements by a aching-box, it is encircled by an elastic ody 0. Between pipe and piston there is a spiral spring d, which rests against the head 6, to which the pipe is attached, and at the top against the screw end or other suitable point. On the piston a is fixed outside the knife-like body g, which may be of any shape.

The fire-extinguishing medium, such as water or gas, is delivered from a pipe m, the outlet end of which is normally closed by T his diaphragm is adapted to be broke or punctured by cutter g. From pipe m the extinguishing iedium flows through an elbow n, that also serves to couple cylinder Z) to pipe m. The outlet of elbow n is protected by a destruotible covering Z[ If now the room in which the apparatus is fixed becomes heated, so that the mercury in the cylinder expands, the piston is expelled. The hose-like insulator or packing contracting, the knife 9 is forced against the disk 7L, which is impervious to and holds the. extinguishing fluid incheck, pierces it, and so allows the liquid to escape. The displaced piston could also be made to open a special reservoir containing a liquid capable of destroying the retaining-disk IL. in order that simultanemisly an alarm may be sounded, there is furnished an electric contact. in this case a spring l', connected with a wire, is actuated by a tappet i of stem (1- and closes a' current beloro the retaining-disk I: is destroyed.

As it does not appear advantageous when water or a mixture of Water or similar liquid is used as extinguishing agent to let it stand in the pipes in case it may freeze, the electric current can be used to open a water-cock placed in a protected position, whereby the Water is allowed. to enter the pipes when the fire breaks out. The piston could also be employed to turn the fire-cock.

The moving of the water-cock can be efl'ected if a powerful current be switched on and a solenoid actuated or by other suitable method. The knife-like instrument could also be replaced b* a striking-pin which is kept compressedand freed direct by the piston, thereby destroying the retainin disk or wall. Finally, air can be umper in the usual manner into the pipes to retain the extinguishing fluid when it is not to remain in them. When theretaining Wall or disk is broken, it is freed and the extinguisher allowed to escape.

Having now fully described my invention, what I claim as new, and desire to secure by Letters Patent, is- I l. in a controlling device for fire-extingpishers, a mercury-tube, an inclosed stem, a

diaphragm, and means carried by the stem for breaking the diaphragm, substantiallyas specified.

In a controlling device for fire-extinguishers, a mercury-tube, an inclosed stem,

a cutter carried thereby, and a diaphragm adapted to. be engaged by the cutter, substantially as specified.

3. In a controlling device for fire-extinguishers, a mercur -tube, an inclosed stem, a flexible bag within the tube that embraces the stem, a cutter carried by the stem, and a diaphragm adapted to be engaged by the cuttor, substantially as specified. I

e. In a controlling device for fire-extin= guishers, a mercury-tube, an inclosed stem, a diaphragm, means carried by the stem for breaking the diaphragm, and an alarm-contact control spe ,ilied.

Signed by me at Dusseldorf, Germany, this 26th day of June, 1906.

HERMANN SANDVOSS' Witnesses:

\VILLIAI; EssENwEIN, Anrnnn PonLMEYEn.

led by the stem, substantially as IOO 

